package com.ynny.Service;

import com.ynny.Dao.optional_coursesDao;
import com.ynny.Entity.Course;

import java.util.List;

public interface CourseService {
    public int selectCourse(String number,String courseName);//选课
    public List<Course> queryAllCourses();

    public List<optional_coursesDao> queryCourseByNumber(String number);
}
